161744459386 has 8 divisors (see below), whose sum is σ = 250443033984. Its totient is φ = 78263448060.

The previous prime is 161744459381. The next prime is 161744459413. The reversal of 161744459386 is 683954447161.

161744459386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161744459386² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161744459386.

It is not an unprimeable number, because it can be changed into a prime (161744459381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1304390740 + ... + 1304390863.

It is an arithmetic number, because the mean of its divisors is an integer number (31305379248).

Almost surely, 2^161744459386 is an apocalyptic number.

161744459386 is a deficient number, since it is larger than the sum of its proper divisors (88698574598).

161744459386 is a wasteful number, since it uses less digits than its factorization.

161744459386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608781636.

The product of its digits is 17418240, while the sum is 58.

The spelling of 161744459386 in words is "one hundred sixty-one billion, seven hundred forty-four million, four hundred fifty-nine thousand, three hundred eighty-six".